Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
  • C08F210/02—Ethene
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
  • C08F210/04—Monomers containing three or four carbon atoms
  • C08F210/06—Propene
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F4/00—Polymerisation catalysts
  • C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
  • C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
  • C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
  • C08F4/70—Iron group metals, platinum group metals or compounds thereof
  • C08F4/7001—Iron group metals, platinum group metals or compounds thereof the metallic compound containing a multidentate ligand, i.e. a ligand capable of donating two or more pairs of electrons to form a coordinate or ionic bond
  • C08F4/7039—Tridentate ligand
  • C08F4/7052—Monoanionic ligand
  • C08F4/7054—NNN
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
  • C08F210/00—Copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
  • C08F210/16—Copolymers of ethene with alpha-alkenes, e.g. EP rubbers

Definitions

• FIELD OF THE INVENTION Selected iron and cobalt complexes of 2, 6-pyridinecarboxaldehydebis (i ines) and 2, ⁇ -diacylpyridinebis (imines) are catalysts for the copolymerization of ethylene and/or propylene and ⁇ -olefins. Novel polymers may be produced.
• FIELD OF THE INVENTION Selected iron and cobalt complexes of 2, 6-pyridinecarboxaldehydebis (i ines) and 2, ⁇ -diacylpyridinebis (imines) are catalysts for the copolymerization of ethylene and/or propylene and ⁇ -olefins. Novel polymers may be produced.
• Copolymers of ethylene and/or propylene and ⁇ -olefins are important items of commerce, millions of tons being produced annually. These polymers are used in a myriad of ways, such as for fiber, films, molding resins, etc.
• ethylene and ⁇ -olefins are copolymerized using a catalyst, often a transition metal compound or complex. These catalysts may vary in cost per unit weight of polymer produced, the structure of the polymer produced, the possible need to remove the catalyst from the polymer, the toxicity of the catalyst, etc. Due to the commercial importance of copolymerizing ethylene, new polymerization catalysts are constantly being sought.
• This invention concerns a first polymerization process, comprising, contacting, at a temperature of about -100°C to about +200°C, a compound of the formula
• Lewis acid capable of abstracting X an alkyl group
• R , R and R are each independently hydrogen, hydrocarbyl, substituted hydrocarbyl, or an inert functional group
• R and R are each independently hydrogen, hydrocarbyl, an inert functional group or substituted hydrocarbyl;
• R and R are aryl or substituted aryl; R is alkyl; and R 21 is alkyl.
• This invention also concerns a second polymerization process, comprising contacting, at a temperature of about -100°C to about +200°C, a Co [II],
• R 1 , R 2 and R are each independently hydrogen, hydrocarbyl, substituted hydrocarbyl, or an inert functional group
• R and R are each independently hydrogen, hydrocarbyl, an inert functional group or substituted hydrocarbyl
• R and R are aryl or substituted aryl;
• R 21 is alkyl; and provided that a Co[II], Co[III], Fe[II] or Fe[III] atom also has bonded to it an empty coordination site or a ligand that may be displaced by said ethylene, and a ligand that may add to said ethylene.
• This invention also concerns a third polymerization process, comprising, contacting, at a temperature of about -100°C to about +200°C, one or both of ethylene and propylene, an olefin of the
• M is Co or Fe
• R 1 , R and R are each independently hydrogen, hydrocarbyl, substituted hydrocarbyl, or an inert functional group
• R and R are each independently hydrogen, hydrocarbyl, an inert functional group or substituted hydrocarbyl
• R and R are aryl or substituted aryl;
• R 21 is alkyl ;
• T 1 is hydride or alkyl or any other anionic ligand into which ethylene or an ⁇ -olefin can insert;
• Y is a neutral ligand capable of being displaced by ethylene or a vacant coordination site;
• Q is a relatively non-coordinating anion;
• P is a divalent polyolefin group; and
• T 2 is an end group.
• hydrocarbyl group is a univalent group containing only carbon and hydrogen. If not otherwise stated, it is preferred that hydrocarbyl groups herein contain 1 to about 30 carbon atoms.
• substituted hydrocarbyl herein is meant a hydrocarbyl group which contains one or more substituent groups which are inert under the process conditions to which the compound containing these groups is subjected. The substituent groups also do not substantially interfere with the process. If not otherwise stated, it is preferred that substituted hydrocarbyl groups herein contain 1 to about 30 carbon atoms. Included in the meaning of "substituted” are heteroaromatic rings . All of the hydrogen atoms may be substituted for, as in trifluoromethyl .
• (inert) functional group herein is meant a group other than hydrocarbyl or substituted hydrocarbyl which is inert under the process conditions to which the compound containing the group is subjected.
• the functional groups also do not substantially interfere with any process described herein that the compound in which they are present may take part in.
• Examples of functional groups include halo (fluoro, chloro, bromo and iodo) , ether such as -OR wherein R is hydrocarbyl or substituted hydrocarbyl .
• the functional group should not coordinate to the metal atom more strongly than the groups in compounds containing R 4 and R , which are shown as coordinating to the metal atom, that is they should not displace the desired coordinating group.
• an “alkyl aluminum compound” is meant a compound in which at least one alkyl group is bound to an aluminum atom. Other groups such as alkoxide, hydride, and halogen may also be bound to aluminum atoms in the compound.
• neutral Lewis base is meant a compound, which is not an ion, which can act as a Lewis base. Examples of such compounds include ethers, amines, sulfides, and organic nitriles.
• cationic Lewis acid is meant a cation which can act as a Lewis acid. Examples of such cations are sodium and silver cations.
• relatively noncoordinating (or weakly coordinating) anions are meant those anions as are generally referred to in the art in this manner, and the coordinating ability of such anions is known and has been discussed in the literature, see for instance W. Beck., et al . , Chem. Rev., vol. 88 p. 1405-1421 (1988), and S. H. Stares, Chem. Rev., vol. 93, p. 927- 942 (1993) , both of which are hereby included by reference.
• Such anions are those formed from the aluminum compounds in the immediately preceding paragraph and X " , including R 9 3 A1X ⁇ , R 9 2 A1C1X ⁇ , R 9 A1C1 2 X ⁇ , and "R 9 A10X ⁇ ", wherein R 9 is alkyl.
• BAF ⁇ BAF tetrakis [3, 5-bis (trifluoromethyl) phenyl] borate ⁇ , SbF 6 " , PF 6 " , and BF 4 , trifluoromethanesulfonate, p-toluenesulfonate, (R f S0 2 ) 2 N ⁇ , and (C 6 F 5 ) 4 B ⁇ .
• an empty coordination site is meant a potential coordination site that does not have a ligand bound to it. Thus if an ethylene molecule is in the proximity of the empty coordination site, the ethylene or other olefin molecule may coordinate to the metal atom.
• a divalent polyolefin group is meant a group -Z- which contains one or more ethylene and/or ⁇ -olefin repeat units.
• a ligand that may add to ethylene, propylene, or an ⁇ -olefin is meant a ligand coordinated to a metal atom into which an ethylene molecule (or a coordinated ethylene molecule) may insert to start or continue a polymerization. For instance, this may take the form of the reaction (wherein L is a ligand) :
• R , R and R are each independently hydrogen, hydrocarbyl, substituted hydrocarbyl, or an inert
• R and R are each independently hydrogen, hydrocarbyl, an inert functional group or substituted hydrocarbyl, and R and R are aryl or substituted aryl.
• (IV) may be made by the reaction of a compound of the formula with a compound of the formula H 2 NR or H 2 NR , wherein R 1 , R 2 and R 3 are each independently hydrogen, hydrocarbyl, substituted hydrocarbyl, or an inert functional group, R and R are each independently
• R and R 5 are each hydrocarbyl or substituted hydrocarbyl
• R 6 and R 7 are aryl or substituted aryl.
• Preferred compounds of formula (IV) and compounds in which (IV) is a ligand are those of compound (III) [note
• R , R and R are hydrogen; and/or R 1 and R 3 are hydrogen and R is trifluoromethyl; and/or
• R 9 , R 10 , R 11 , R 14 , R 15 and R 16 is each independently halogen, alkyl containing 1 to 6 carbon atoms, or hydrogen, and it is more preferred that each of these is hydrogen; and/or
• R 10 and R are methyl;
• R 8 and R is each independently halogen, phenyl or alkyl containing 1 to 6 carbon atoms, and it is p IT especially preferred that each R and R is alkyl containing 1-6 carbon atoms and is more preferred that R 8 and R are methyl; and/or
• R and R is each independently halogen, phenyl, hydrogen, or alkyl containing 1 to 6 carbon
• each R and R is alkyl containing 1-6 carbon atoms, and it is especially preferred that each R and R is alkyl containing 1-6 carbon atoms, and it is especially preferred that each R and R is alkyl containing 1-6 carbon atoms, and it is
• R and R are methyl
• R and R are each independently halogen, thioalkyl, hydrogen or alkyl containing 1 to 6 carbon atoms, and it is especially preferred that R and R are each independently hydrogen or methyl; and/or
• R , R , R , R and R are hydrogen, and R , R , R 14 and R are hydrocarbyl or substituted hydrocarbyl . Also in (III), and hence in (I), (II), (IV) (VII), (IX) and (XII) that match the formula of (III), it is preferred that:
• R 8 and R 1 are each independently hydrogen, hydrocarbyl, substituted hydrocarbyl or an inert functional group;
• R 9 , R 10 , R 11 , R 14 , R 15 and R 16 are each independently hydrogen, hydrocarbyl, substituted hydrocarbyl or an inert functional group;
• R 12 and R are each independently hydrogen, hydrocarbyl, substituted hydrocarbyl or an inert functional group; and provided that any two of R , R , R , R , R 13 , R 14 , R 15 , R 16 and R 17 that are vicinal to one another, taken together may form a ring.
• R 1 , R 2 , R 3 , R 9 , R 10 , R 11 , R 14 , R 15 and R 16 are hydrogen, R and R are chloro, and R , R , R and R are methyl;
• R 1 , R 2 , R 3 , R 9 , R 10 , R 11 , R 12 , R 14 , R 15 , R 16 and R 17 are hydrogen, R and R are methyl, and R and R are phenyl;
• R 1 , R 2 , R 3 , R 4 , R 5 , R 9 , R 10 , R 11 , R 14 , R 15 , and R 16 fl 19 1 " T 7 are hydrogen, and R , R , R and R are i-propyl; and R 1 , R 2 , R 3 , R 4 , R 5 , R 10 , R 8 , R 10 , R 13 , R 15 and R 17 are hydrogen, and R , R , R and R are trifluoromethyl .
• X is chloride, bromide and tetrafluoroborate .
• M is Fe[II] or Fe[III] .
• an iron or cobalt complex (II) is contacted with ethylene, an ⁇ -olefin and a neutral Lewis acid W capable of abstracting X-, hydride or alkyl from (II) to form a weakly coordinating anion, and must alkylate or be capable of adding a hydride ion to the metal atom, or an additional alkylating agent or an agent capable of adding a hydride anion to the metal atom must be present.
• the neutral Lewis acid is originally uncharged (i.e., not ionic).
• Suitable neutral Lewis acids include SbF 5 , Ar 3 B (wherein Ar is aryl), and BF 3 .
• Suitable cationic Lewis acids or Bronsted acids include NaBAF, silver trifluoromethanesulfonate, HBF 4 , or [C 6 H 5 N(CH 3 ) 2 ] + [B(C 6 F 5 ) 4 ] ⁇ .
• R contains 1 to 4 carbon atoms, and more preferred that R 20 is methyl or ethyl.
• alkyl aluminum compounds may alkylate (II) .
• not all alkyl aluminum compounds may be strong enough Lewis acids to abstract X ⁇ or an alkyl group from the metal atom. In that case a separate Lewis acid strong enough to do the abstraction must be present.
• a preferred neutral Lewis acid which can alkylate the metal, is a selected alkyl aluminum compound, such as R 19 3 A1, R 19 A1C1 2 , R 19 2 A1C1, and "R 19 A10"
• alkylaluminoxanes wherein R 19 is alkyl containing 1 to 25 carbon atoms, preferably 1 to 4 carbon atoms.
• Suitable alkyl aluminum compounds include methylaluminoxane (which is an oligomer with the general formula [MeA10] n ), (C 2 H 5 ) 2 A1C1, C 2 H 5 A1C1 2 , and [ (CH 3 ) 2 CHCH 2 ] 3 A1.
• Metal hydrides such as NaBH 4 may be used to bond hydride groups to the metal M.
• a cobalt or iron complex of (I) is either added to the polymerization process or formed in situ in the process.
• more than one such complex may be formed during the course of the process, for instance formation of an initial complex and then reaction of that complex to form a living ended polymer containing such a complex.
• (XII ) wherein R 1 through R7, and M are as defined above, T 1 is hydride or alkyl or any other anionic ligand into which ethylene or an ⁇ -olefin can insert, Y is a neutral ligand capable of being displaced by ethylene, propylene or an ⁇ -olefin, or a vacant coordination site, the "parallel lines" are an ethylene molecule coordinated to the metal, and Q is a relatively non- coordinating anion.
• Complexes may be added directly to the process or formed in situ. For instance, (VII) may be formed by the reaction of (II) with a neutral Lewis acid such as an alkyl aluminum compound.
• Another method of forming such a complex in situ is adding a suitable iron or cobalt compound such as iron [II] acetylacetonate, (I) and an alkyl aluminum compound.
• a suitable iron or cobalt compound such as iron [II] acetylacetonate, (I) and an alkyl aluminum compound.
• metal halides and carboxylates such as acetates
• these precursor metal salts be at least somewhat soluble in the process medium.
• the complex may be in a form such as
• (IX) wherein R 1 through R , M, and Q are as defined above, and P is a divalent polymeric groups containing repeat units derived from ethylene and/or propylene and/or an ⁇ -olefin, and T is an end group, for example the groups listed for T above.
• (IX) is in essence a polymer containing a so-called living end. It is preferred that M be in +2 oxidation state in (VII), (VIII) and (IX).
• Compounds such as (VII) , (IX) and (XII) may or may not be stable away from an environment similar to that of the polymerization process, but they may be detected by
• NMR spectroscopy particularly one or both of 1H and 13C NMR, and particularly at lower temperatures.
• Such techniques especially for polymerization "intermediates" of these types are known, see for instance World Patent Application 96/23010, especially Examples 197-203, which is hereby included by reference.
• the process conditions for the third process such as temperature, pressure, polymerization medium, etc., may be the same as for the first and second polymerization processes, and preferred conditions for those processes are also preferred for the third polymerization process.
• the temperature at which the ethylene copolymerization is carried out is about -100°C to about +200°C, preferably about -60°C to about 150°C, more preferably about -50°C to about 100°C.
• ⁇ -olefins of the formula may be used. It is preferred that R21 have 1 to 18 carbon atoms, more preferably 2 to 8 carbon atoms, and/or that R be n-alkyl . Since ethylene is polymerized considerably faster than propylene and most ⁇ -olefins by these catalysts, in order to obtain substantial incorporation of the ⁇ -olefin (s), the concentration of ethylene in the polymerization should preferably be relatively low compared to the concentration of the propylene and ⁇ -olefin(s).
• ethylene at a low partial pressure preferably less than 1.0 MPa, more preferably less than 500 kPa, and especially preferably less than 300 kPa (all these ethylene partial pressures are absolute partial pressures) .
• ⁇ -olefin is a gas its partial pressure should preferably be relatively high.
• ⁇ -olefin is used in the liquid phase, its liquid concentration should preferably be relatively high. NMR analysis of the product copolymers shows that the end groups are both saturated and unsaturated (olefinic) , although saturated end groups usually outnumber unsaturated end groups. It is suspected that saturated end groups may arise through initiation and chain transfer involving alkyl aluminum compounds present in the polymerization.
• Unsaturated end groups are believed to arise though a ⁇ -hydride elimination- type mechanism.
• a small proportion of the olefinic ends appear to be internal olefins, but the majority of the olefinic ends are usually ⁇ -olefins (terminal olefins) .
• the product copolymer have at least 0.5 mole percent (total), more preferably 0.75 mole percent (total) , especially preferably 1 mole percent (total) , and highly preferably at least about 2 mole percent (total) of ⁇ -olefin (s) incorporated into the product copolymer.
• ⁇ -olefin ⁇ -olefin
• methyl branches in the copolymer are associated with the end groups (but are not the end groups themselves) .
• end groups associated with methyl branches are ⁇ — ⁇ CH 2 CH(CH 3 )CH 2 CH 2 CH 3 and CH 2 CH (CH 3 ) CH 2 CH 2 CH 2 CH 3 are the methyl branch associated groups for 1-pentene and 1-hexene respectively (and similar structures for higher and lower homologs) , wherein " ⁇ " is the remainder of the polymer chain.
• Such groups are detectable by ⁇ 3 C-NMR because methyl branches near the chain ends are somewhat different than methyl branches further in the interior of the polymer chain, see for instance the Examples herein. Note that the group beyond the methine carbon atom (towards the chain end) is actually -R . In other words the methyl branch is attached to the same carbon atom as an -R 21 group. Not all polymer chains have such chain ends, but usually at least some of them are present in these copolymers.
• the polymerization processes herein may be run in the presence of various liquids, particularly aprotic organic liquids.
• the catalyst system, ethylene, propylene, ⁇ -olefin, and polyolefin may be soluble or insoluble in these liquids, but obviously these liquids should not prevent the polymerization from occurring.
• Suitable liquids include alkanes, cycloalkanes, selected halogenated hydrocarbons, and aromatic hydrocarbons.
• Specific useful solvents include hexane, toluene and benzene.
• the copolymerizations herein may also initially be carried out in the solid state [assuming (II), (III) (IV) or (VII) is a solid] by, for instance, supporting (II) , (III) (IV) or (VII) on a substrate such as silica or alumina or an organic substrate such as a polymer, activating it with the Lewis (such as W, for instance an alkylaluminum compound) or Bronsted acid and exposing it to an olefin.
• the support may also be able to take the place of the Lewis or Bronsted acid, for instance an acidic clay such as montmorillonite .
• Another method of making a supported catalyst is to start a polymerization or at least make an iron or cobalt complex of another olefin or oligomer of an olefin such as 1-hexene on a support such as silica or alumina.
• These "heterogeneous" catalysts may be used to catalyze polymerization in the gas phase or the liquid phase.
• gas phase is meant that the monomers are transported to contact with the catalyst particle while they are in the gas phase.
• Hydrogen may be used as a chain transfer agent in all of the polymerization processes described herein.
• oligomers and copolymers of ethylene and/or propylene are made. They may range in molecular weight from oligomers, to lower molecular weight oils and waxes, to higher molecular weight polyolefins .
• One preferred product is a polymer with a degree of polymerization (DP) of about 10 or more, preferably about 40 or more.
• DP is meant the average number of repeat (monomer) units in a polymer molecule.
• Example 3 In a drybox under a nitrogen atmosphere, (XIII) (2.0 mg) was weighed into a flask and slurried in 35 ml 1-hexene (Aldrich, 99+%, filtered through A1 2 0 3 and stored over activated molecular sieves) . The flask was stoppered and removed from the drybox. PMAO-IP (1.0 ml) was added to 5 ml anhydrous toluene and placed in a vial and removed from the drybox. The 1-hexene slurry was placed in a 100 ml Parr® stirred autoclave under an atmosphere of nitrogen. Stirring was started and the reactor heated to 50°C.
• Example 4 In a drybox under a nitrogen atmosphere, (XIII) (6.1 mg, 0.011 mmol) was weighed into a Schlenk flask and slurried in 10 ml anhydrous toluene. 1-Hexene (5 ml, dried by distillation from sodium) and anhydrous toluene (15 ml) were added and the Schlenk flask sealed and removed from the drybox. The flask was cooled to 0°C and then flushed well with ethylene and pressurized to 35 kPa. PMAO-IP (0.9 ml) was added and the solution turned green and warmed. After 30 min the reaction was quenched by addition of MeOH.
• XIII 6.1 mg, 0.011 mmol
• Example 5 In a drybox under nitrogen, (XIII) (1.8mg) was placed in 1-hexene (25 ml, Aldrich 99+%, filtered through activated A1 2 0 3 and stored over activated molecular sieves) in a Hoke cylinder and sealed. PMAO-IP (0.9 ml) was placed in 2 ml anhydrous toluene in a vial and sealed. The containers were removed from the drybox. The 1-hexene slurry was placed in a Parr® stirred autoclave. Ethylene (70 kPa) was added, stirring started and the mixture heated to 75°C. The PMAO-IP solution was added to the reactor with an additional 160 kPa ethylene.
• Example 7 In a drybox under nitrogen, (XIII) (3.0 mg) was placed in a Schlenk flask and anhydrous toluene (5 ml) and 1-hexene (10 ml, Aldrich 99+%, filtered through activated A1 2 0 3 and stored over activated molecular sieves) added. The flask was sealed and removed from the drybox. The flask was flushed with ethylene and MMAO-3A (0.45ml, Akzo, 6.42 wt% Al in heptane) added. After 30 min the reaction was quenched by addition of MeOH/10% HCl.
• Example 11 In a drybox under nitrogen, (XIII) (1.4 mg) was placed in ⁇ 6 ml anhydrous toluene in a vial. 1-Pentene (30 ml, filtered through activated A1 2 0 3 and stored over activated molecular sieves) , anhydrous toluene (5 ml) and PMAO (0.5ml, Akzo, 10.9 wt% Al in toluene) was placed in a Hoke cylinder and sealed. The containers were removed from the drybox. The 1-pentene slurry was placed in a 100ml Parr® stirred autoclave. Ethylene (41 kPa) was added and stirring started.
• Example 12 In a drybox under nitrogen, (XIII) (3.0 mg) was placed in a Schlenk flask and anhydrous toluene (5 ml) and 1-pentene (10 ml, filtered through activated A1 2 0 3 and stored over activated molecular sieves) added. The flask was sealed and removed from the drybox. The flask was flushed with ethylene and MMAO-3A (0.45 ml, Akzo, 6.42 wt% Al in heptane) added. After 30 min the reaction was quenched by addition of MeOH/10% HCl. The solid polymer was filtered, washed well with MeOH/10% HCl, MeOH and finally acetone and dried under vacuum.
• Example 13 In a drybox under nitrogen, (XIII) (3.0 mg) was placed in a Schlenk flask and anhydrous toluene (5 ml) and 1-pentene (10 ml, filtered through activated A1 2 0 3 and stored over activated molecular sieves) added. The flask was sealed and removed from the drybox. The flask was flushed with ethylene and AlEt 3 (0.3 ml, 0. IM solution in toluene/hexane) and B(C 6 F 5 ) 3 (0.0146 g in 0.5 ml toluene) were added. After 30 min the reaction was quenched by addition of MeOH/10% HCl.
• Example 14 In a drybox under nitrogen, (XIII) (3.0 mg) was placed in a Schlenk flask and anhydrous toluene (5 ml) and 1-pentene (10 ml, filtered through activated A1 2 0 3 and stored over activated molecular sieves) added. The flask was sealed and removed from the drybox. The flask was flushed with ethylene and IBAO-0.65 (0.45ml, Akzo, 3.5 wt% Al in toluene) added. After 90 min the reaction was quenched by addition of MeOH/10% HCl. The solid polymer was filtered, washed well with MeOH/10% HCl, MeOH and finally acetone and dried under vacuum.
• Example 16 In a dry box under nitrogen atmosphere, the iron complex 2, 6-diacetylpyridinebis (2,4,6- trimethylphenylimine) iron dichloride (1.5 mg, 2.86 ⁇ mol) was weighed into a vial and diluted to 10 ml with toluene (Aldrich, Anhydrous 99.8%). An aliquot of 3 ml containing 0.45 mg (0.86 ⁇ mol) of catalyst was transferred to the injector vessel with 50 ml of toluene. To a second vessel, 100 ml of CaH 2 purified 1-octene (Aldrich, 98%) was mixed with 2 ml of MMAO-3A (Akzo Nobel) .
• Example 17 In a dry box under nitrogen atmosphere, an aliquot of 3 ml from the same stock solution of Example 16 was diluted with 50 ml of toluene and transferred to the injector vessel. To the second vessel, 80 ml of CaH 2 purified 1-octene (Aldrich, 98%) was mixed with 2 ml of MMAO-3A (Akzo Nobel) . These solutions were transferred by pressure to a 600 Parr® autoclave reactor. The polymerization temperature was 60 °C and the ethylene pressure was 860 kPa, adjusted by a pressure regulator. The polymerization was run for 30 min. The reaction was quenched with methanol. The solid polymer was filtered, washed with acetone, and dried under vacuum.
• This catalyst solution was transferred via cannula to a feed vessel of a catalyst pump. The pumping rate was constant for 15 min, resulting in 3.8 mg of catalyst used.
• 85 ml of CaH 2 purified 1-hexene (Aldrich, 99%) was transferred to the reactor through a feed vessel.
• a 500 ml Zipperclave® reactor was charged with 165 ml of hexane (Aldrich, anhydrous, 95%+) .
• the polymerization was run at 50°C and 1.01 MPa of ethylene pressure. After 30 min, the reaction was quenched with methanol. The solid polymer was filtered, washed with acetone and dried under vacuum.
• Comparative Example Example 18 above was repeated with the same iron complex solution available in the catalyst pump feed vessel. No comonomer was added to this example. The catalyst pumping rate was constant for the first 15 min of the run, resulting in 2.3 mg of catalyst used.

Landscapes

• Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
• Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
• Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
• Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
• Polymerization Catalysts (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=22203417

Family Applications (1)

Country Status (11)

Families Citing this family (27)

Family Cites Families (13)

• 1999
  • 1999-05-26 AU AU43133/99A patent/AU748513B2/en not_active Ceased
  • 1999-05-26 CN CNB998067709A patent/CN1203098C/zh not_active Expired - Fee Related
  • 1999-05-26 DE DE69912599T patent/DE69912599T2/de not_active Expired - Lifetime
  • 1999-05-26 AT AT99955275T patent/ATE253598T1/de not_active IP Right Cessation
  • 1999-05-26 KR KR1020007013377A patent/KR20010043881A/ko not_active Application Discontinuation
  • 1999-05-26 JP JP2000552175A patent/JP2002517526A/ja active Pending
  • 1999-05-26 BR BR9911200-0A patent/BR9911200A/pt not_active Application Discontinuation
  • 1999-05-26 CA CA002330151A patent/CA2330151A1/fr not_active Abandoned
  • 1999-05-26 EP EP99955275A patent/EP1082361B1/fr not_active Expired - Lifetime
  • 1999-05-26 CN CNB2005100624932A patent/CN100441604C/zh not_active Expired - Fee Related
  • 1999-05-26 WO PCT/US1999/011549 patent/WO1999062967A2/fr not_active Application Discontinuation
• 2001
  • 2001-04-03 US US09/824,977 patent/US20020077432A1/en not_active Abandoned
  • 2001-09-04 US US09/946,170 patent/US20020111445A1/en not_active Abandoned
• 2002
  • 2002-09-20 US US10/251,041 patent/US6803432B2/en not_active Expired - Lifetime
• 2004
  • 2004-08-16 US US10/919,181 patent/US7041764B2/en not_active Expired - Lifetime

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events